Natalie Tavares was the wife of Andres Tavares, the patient in the Season 8 episode Better Half. She was portrayed by actress Melanie Lynskey. Natalie came to see Dr. Banerjee with her husband to see about getting into a clinical trial for his Alzheimer's disease. However, he soon starts coughing up blood and has to be admitted. Joseph comes to see her in the hospital and the team realizes that he's not just a "friend" but is probably Natalie's boyfriend. She denies ever having sex with him, but admits they are very close.